America's foreclosure crisis could be less than halfway over, with 8.3 percent of mortgages made from 2004-2008 at immediate, serious risk of default, according to the Center for Responsible Lending.

RealtyTrac provided Business Insider with exclusive data on the number of homes that have received foreclosure notices so far this year. To visualize the crisis we used maps from Hot Pads (purple dots represent foreclosed homes on the market).